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https://issues.apache.org/activemq/browse/CAMEL-1078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47972#action_47972
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James Strachan commented on CAMEL-1078:
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BTW the main reason to zap generics was it forced a pointless copy of an
exchange when sending to - say - a JMS endpoint. However when consuming from a
JMS endpoint - using a JmsExchange makes sense - and is a good optimisation IMHO
> Do not copy Exchanges at each step to improve performance
> ---------------------------------------------------------
>
> Key: CAMEL-1078
> URL: https://issues.apache.org/activemq/browse/CAMEL-1078
> Project: Apache Camel
> Issue Type: Improvement
> Components: camel-core
> Affects Versions: 1.5.0
> Reporter: Hadrian Zbarcea
> Assignee: Hadrian Zbarcea
> Priority: Critical
> Fix For: 2.0.0
>
>
> The code in DefaultEndpoint.createExchange(Exchange exchange), calls on
> getExchangeType() to figure out if a new copy of Exchange needs be created.
> The code relies though on the generic argument of the Endpoint type to figure
> out the actual Exchange type. With the generics removed part of CAMEL-872,
> getExchangeType() always returns null, forcing a copy every time.
> There is no real need to extend Exchange, so the proposal for this to make
> the Exchange final and move the component specific bits, if any, in the
> Message.
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